Table 2– Pairwise comparison of interferon-γ response to Rv2628 after 1 day of in vitro stimulation at different stages of Mycobacterium tuberculosis infection/disease

	Rv2628 positivity n/N (%)	Cured TB	Active TB	Recent infection	Controls
Remote LTBI	14/16 (87.5	0.178	<0.001	<0.001	<0.001
Cured TB	24/45 (53.3		0.056	0.048	0.001
Active TB	12/50 (24.0)			1.000	0.537
Recent infection	4/23 (17.3				1.000
Controls	0/15 (0)

Data are presented as p-values, unless otherwise indicated; the hypothesis of equal proportion was tested using Fisher’s exact test with Bonferroni correction (a p-value of ≤0.05 was regarded as significant). N: number of subjects in group; TB: tuberculosis; LTBI: latent TB infection.